Changed the default build target to managed and split the clean target into managed and native.

ikvm.build

@@ -1,17 +1,16 @@
 <?xml version="1.0"?>
-<project name="ikvm" default="all">
+<project name="ikvm" default="managed">
     <include buildfile="ikvm.include" />
+    <target name="native">
+        <nant buildfile="native/native.build" />
+    </target>
     <target name="signed">
          <property name="signed" value="SIGNCODE" />
          <property name="signoption" value="-key:ikvm-key" />
          <property name="ilasm_signoption" value="/key:@ikvm-key" />
-         <call target="all" />
+         <call target="managed" />
     </target>
-    <target name="all" depends="clean native managed" />
-    <target name="native">
-        <nant buildfile="native/native.build" />
-    </target>
-    <target name="managed" depends="CommonAssemblyInfo">
+    <target name="managed" depends="clean-managed CommonAssemblyInfo">
         <nant buildfile="tools/tools.build" />
         <nant buildfile="runtime/runtime.build" target="first-pass" />
         <nant buildfile="awt/awt.build" target="first-pass" />
@@ -34,7 +33,8 @@
             </filterchain>
         </copy>
     </target>
-    <target name="clean">
+    <target name="clean" depends="clean-managed clean-native" />
+    <target name="clean-managed">
         <delete failonerror="false">
             <fileset>
                 <include name="bin/IKVM.AWT.WinForms.dll" />
@@ -42,7 +42,6 @@
                 <include name="bin/IKVM.Runtime.dll" />
                 <include name="bin/IKVM.Runtime.JNI.dll" />
                 <include name="bin/IKVM.OpenJDK.*.dll" />
-                <include name="bin/libikvm-native.so" />
                 <include name="bin/ikvm.exe" />
                 <include name="bin/ikvmc.exe" />
                 <include name="bin/ikvmstub.exe" />
@@ -64,6 +63,13 @@
                 <include name="tools/pubkey.exe" />
                 <include name="tools/pubkey.txt" />
                 <include name="tools/updbaseaddresses.exe" />
+            </fileset>
+        </delete>
+    </target>
+    <target name="clean-native">
+        <delete failonerror="false">
+            <fileset>
+                <include name="bin/libikvm-native.so" />
                 <include name="native/Release-x64/ikvm-native.dll" />
                 <include name="native/Release-x64/*.obj" />
                 <include name="native/Release-x86/ikvm-native.dll" />